Who's the singer? What song is it?
http://www40.zippyshare.com/v/S5nnbvly/file.html

Is it the same guy (some fifteen or twenty years younger though)?

http://www.kasi-time.com/item-20875.html
I think that's the song.

Thanks.
NOW I think that's the song, too.

As they say in Polish: Life is full of zasadzkas.

Should anyone be interested in the song for some stupid reason, you can copy the lyrics here:
http://j-lyric.net/artist/a000675/l00d560.html

(The link by Bokusenou - it can take a while to figure out how to copy the lyrics.)

The guy's not so bad, not bad at all.

Here's a simple song, 夏祭り :

The same song sung by a thirteen-year-old girl:

And here are the lyrics:
http://j-lyric.net/artist/a000675/l00f6e2.html